Technology: OVPN

OpenVPN is best utility to connect clients (PC, Mac and Smartphones) to a centralized network because:

1) it is same as SSL connection which means data is encrypted (other VPN does not include encryption itself)2) clients can be anywhere in the Internet with dynamic and private IP behind a firewall3) it is easy to setup and can be very low cost by Mikrotik

And for those users who are connecting to unsecure public Wi-Fi, OVPN is the best solution for Internet surfing with no encryption applications such as PoP3 mail, web site without SSL and unencrypted apps etc.